Suspension For Leaving Lobby After Match

We won,

Was my first match on.

Went back to main lobby to buy my Canada Flag Banner.

Now suspended for 30 minutes

What a joke.

This was an issue in Gears 4, and now it follows to Gears 5?

Same happened to me. I played a match, left a lobby to play horde and i was suspended for 30 mins. Expect to see MANY threads being made for the same issue.